Spark-timer.



H'. w. GABBL. SPARK TIMER. APPLICATION FILED OUT. 14, 1907.

Patented Mar. 30, 1909.

2 SHEET8-SHEET 1.

H. W. GABEL.

' SPARK TIMER. APPLICATION FILED 001'. 14, 1907.

Patented Mar. 30, 1909.

2 SHEETS-SHEET 2.

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HERMAN W. GABEL, OF FOND DU LAC, WISCONSIN.

SPARK-TIER.

Specification of Letters Patent.

Patented March 30, 1909.-

Application filed October 14, 1907. Serial No. 397,359.

To all whom it may concern:

Be it known that I, HERMAN W. GABEL, a citizen of the United States, residing at Fond du Lac, in the county of Fond du Lac and State of Wisconsin, have invented certain new and useful Improvements in Spark- Timers, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in devices for regulatingthe time of sparking or time of ignition in gas engines and similar motors; and an object of my invention is to increase the life of such devices and to permit of the ready adjustment of the rubbing parts. when Worn by long use.

' Another object of my invention is to provide adevice of this character which will prove economical in operation and will require the minimum expenditure of energy for its operation.

A further object of my invention is to provide a spark-timer which will )rove simple in construction, comparatively cheap in manufacture and efiicient and economical in operation and which will be made up of few parts and'susceptible of ready adjustment.

In the drawings illustrating the 'principle of my invention and the best mode now known to me of appl ing that principle,

Figure 1 is a view of t e interior, part1 in section, the cover-plate being removed; 1g. 2 1s a front elevation; Fig. 3 1s a section on the line A-A of Fig. 1; Fig. 4 is a detail of the insulating ring; Fig. 5 is a longitudinal section and Fig. 6 an end view of the rotary V shaft; Fig. 7 is a detail of the stationary contact-post; Fig. 8 is a detail of the sleeve and Fig. 9 is a detail of the slidable spring-controlled firing-pin.

The housing or casing ais in the form of a I flat cylindrical box having a central aperture b the walls of which serve as a bearing for the shaft 0 which carries the firing mechanism hereinafter described. Mounted in the housin a is an insulating ring (1 formed with ho es 6 throu h whichv extend or project the threaded stu s. or osts f cast integral with the back wall of t ie, casing.- Held in place b the nuts 9 upon these posts f is the eover-' p ate it formed-with a central socket'i into which projects the front end of the shaft c. The insulating ring (1 is formed with as many recesses j as there are stationary contactthe latter being mounted in posts 7c, one of The threaded shank m of the each recess 7'.

contact-post- 7c projects outwardly through the cylindrical wall or rim n of the housing from which it is carefullyinsulatcd. Upon the threaded shank m outside of the housing are screwed a flat or washer-nut o and a binding-nut p. Between the nuts 0, 1) maybeplaced the lead wire g which charges the c tact-post 7c with electricity. Between t 1e rim n and the flat nut 0 is mounted a washer 1* of insulating material. As is best shown in Fi 7 the contact-faces s of the contactpost are inclined and meet near the center of thelhead 25, whereby the latter is wedgesha cc he shaft 0 is formed with a disk-like ortion a between which and the rear part 0 the shaft is a shoulder 'v and between which and the front art of the shaft is a shoulder w. Against tiie latter fits the cover-plate 7, while the back wall of the casing to fits against the shoulder '22. The disk 0/. is formed with a diametrical passage or chambenw in which is held by the set-screw y a firing-pin carrier or sleeve 2 threaded interiorly at one end and formed with a shoulder or flange 2 at the opposite end. The opening 3 of the sleeve is not circular in section but has fiattened sides or walls which prevent the firingpin 4 slidably. mounted in the sleeve from turnin (See Fig. 8). The firing-pin 4 is formed with a contact ti 5, which fits in the opening 3 and is designe and adapted to rub against the contact-head t of the contactposts is. Into the threaded end of the sleeve .2 is screwed a flat nut 6 between which and the butt or inner end of the firing-pin 4 is interposed a coil-spring 7 which tends to press the latter outward y, against the shoulder or inwardly-projecting flange 2'. By turning the screw-nut 6 the tension ofthe coils rin 7 may be varied. 'One end of the 0 am or or passage a: is'thr'eaded to receive an adjusting nut 8 largerthan but similar to the screw-nut 6. The nut 8 bears against the threaded end of the sleeve 2 and by turnd into the interior of the spark-timer to lulits the interiorly-threaded follower 11. By turnin the latter, the grease is forced *hroug the central channel 12 in the shank 9 and the passage 13 in the insulating ring bricate the 'rubbing'parts. As the firing-tip 5 wipes against the inclined contact-faces s with a yielding pressure, these faces are kept 4' automatically free from dust, grit, grease, rust and other products of corrosion.

I claim': v

1. In a spark-timer, the combination with a casing and contact-posts mounted therein, of a rotary member mounted in said. casing and formed with a chamber; a carrier mounted in said chamber; means located in said chamber for varying the position of said carrier .in said chamber; and a firing-pin carried by said carrier and adapted to rub against said contact-posts.

2. In a spark-timer, the combination with a casing and contact-posts mounted therein; of a rotary member mounted in said'casing and formed with a chamber; a sleeve mounted in said chamber; means located in said chamber for varying the position of said sleeve in said chamber; and a firing-pin carriedby said sleeve and adapted to rub against said contact-posts.

3. In a spark-timer, the combination with a casing and contact-posts mounted therein; of a chambered shaft mounted in said casing and rotatable relative thereto; a firing-pin adapted to rub against said contact posts; a carrier in which said firing-pin is carried, said carrier being mounted in said chambered shaft; and means located in the chamber of said shaft for adjusting the position of said carrier relatively to said shaft, whereby said v firing-pin is adjusted relatively to said coni bered carrier in which said firing-pin is carried and which is adjustahly mounted in said shaft; a yielding device mounted in said j chambered carrier and adapted to act upon saidfiring-pin; means for adjusting the position of said chambered carrier and thereby of said firing-pin; and means for varying the tension of said yielding device.

5. in a spark-timer,-the combination with a casing and contact-posts mounted therein; of a rotary member mounted in said casing; a firing-pin adapted to rub against said contact-posts; a chambered carrier which is adj usta bly mounted in said rotary member and in which said liring-pin is carried, said can rier being formed with an inwardly-projecting flange; means for adjusting said chambered carrier and thereby varying the position of said flange and a yielding device mounted in said chambered carrier and adapted to press upon said iiring-pin, the outward travel of which is limited by said flange.

In witness whereof i have hereunto set my hand in the presence of the two witnesses undersigned, this seventh day of October, 1907, at said Fond du Lac.

HERMAN W. GABEL.

Witnesses B. A. Husrme, B. J. Hus'rme. 

